GNRH1 and cryptorchidism: In a study investigating the efficacy of combination therapy in the management of undescended testes, Bertelloni et al (31) reported that the success rate was below 20% for both short- and long-term treatment (18.9% for hCG; 12.8% for GnRH; 15% for hCG in combination with GnRH; 12.8% for hCG in combination with hMG given long-term).